I need to get the update query status means, whether the query executed successfully or not. How do i achieve this.
MongoCollection<BsonDocument> Updatecollection =
MongoDBs.GetCollection<BsonDocument>(collectionName);
Updatecollection.Update(query, update, UpdateFlags.Multi);
this is the way i used to update my collection, Please help me to get the query status.
thanks in advance
Siva
The Update method returns a WriteConcernResult object that contains the results of the update.
See the docs for the details of that object.
For example:
var result = Updatecollection.Update(query, update, UpdateFlags.Multi);
Console.WriteLine("{0} docs updated", result.DocumentsAffected);
Related
I am creating a vertex with multiple edges but need a bit of help writing a query to retrieve the data.
Creation query
g.addV("referral")
.as("r")
.property("createdAt", Date.now())
.addE("prospect")
.from_("r")
.to(__.V(user.id))
.addE("opportunity")
.from_("r")
.to(__.V(second_user.id))
.addE("referredBy")
.from_("r")
.to(__.V(business.id))
.select("r")
.next()
I want to run a query that gets data from the first and second user. So far I have
g.V(business.id) //business
.in_("opportunity")
.as("referral")
.outV("referredBy")
.as("referrer")
.inV("prospect")
.as("prospect")
.select("referral", "referrer", "prospect")
.toList()
.next()
I'm getting an error when running this query. I basically want an array of a referral, referrer and prospect in one object that I can iterate through. Also any help on making my initial query better would be helpful.
Please let me know if this makes sense or if you need any other info. Any help would be appreciated.
The errors are because you are using outV when you should be using out. You only need to use inV and outV after outE and inE. So your query should be
g.V(business.id) //business
.in("opportunity")
.as("referral")
.out("referredBy")
.as("referrer")
.in("prospect")
.as("prospect")
.select("referral", "referrer", "prospect")
.toList()
Also you don't need next as you already have toList.
Lastly rather than use as and select I would look at the path step instead.
g.V(business.id) //business
.in("opportunity")
.out("referredBy")
.in("prospect")
.path()
.toList()
I am using this query to get some statistics from our DB
SELECT DateTimePart("yyyy", c.RedeemedDate) AS RedeemedInYear,
DateTimePart("m", c.RedeemedDate) AS RedeemedInMonth,
AVG(c.RedPriceStoreSummary ?? c.WhitePriceStoreSummary) AS AverageBasketValue
FROM c
WHERE c.IsRedeemed = true
AND c.Brand = 'xxx'
AND c.RedeemedDate != null
AND DateTimePart("yyyy", c.RedeemedDate) = DateTimePart("yyyy", GetCurrentDateTime())
GROUP BY DateTimePart("m", c.RedeemedDate),
DateTimePart("yyyy", c.RedeemedDate)
The problem is that query crashes with the following error if there are no results
Cannot read property 'create' of undefined
If I force the query to where it gets results then everything works fine but I dont want the query to crash if there are no results I want an empty result set.
Am I missing something here?
You need to trap queries in a try block and catch if it returns a 404. This is a hold over in behavior from the previous SDK. Alternatively you can use the stream variant of these SDK functions which will not throw exceptions when data is not found, however you still want to check the http response code and you'll also need to manually deserialize the data.
I'm writing a simple Google Action which will read the Firebase Realtime Database, and return result in the response. My problem is, the query result is being passed back in response to DialogFlow only after at least 2 attempts.
Below the screenshots showing the end result in the Simulator
First query screenshot
The first line of the response is returned from the Cloud Function, and contains values passed with the "Context". There is no second line in this response.
below is the screen showing the result after sending exactly the same request second time.
Second query screenshot
First line is the same as previously, but this time I also get the second line which contains the query result data.
It looks like my code is "working" (I get the correct data from the database), but for some reason it only works if I trigger it at least 2 times in quick succession.
Below is the code snipped which handle this request:
function googleAssistantHandler(agent) {
let conv = agent.conv();
let outCommandContext = agent.getContext('outcommand');
let outCharacterContext = agent.getContext('outcharacter');
let character = outCharacterContext.parameters.character;
let command = outCommandContext.parameters.command;
agent.add('<prosody rate="140%" pitch="0.4">' + character +' '+ command +'</prosody>');
var movesRef = admin.database().ref('characters/'+character.toLowerCase()+'/moves/');
movesRef.limitToFirst(1).orderByChild("notation")
.equalTo(command.toString()).on("child_added",function(snapshot){
agent.add(`record number is ` + snapshot.key);
});
}
I've tried using once() instead of on() (as it would make more sense in my case... i don't need to listen to changes on the database, i just want to retrieve data once)- but, I couldn't get it to work.
Can you guys help me out understanding why my query returns result only after the second trigger?
Thanks!
you are using a callback method to get the data from database so there is no guaranty that it will be called before your function is returned. to solve the issue, you need to use a Promise and return that Promise in your function so the last few lines of your function will look like this
return movesRef.limitToFirst(1).orderByChild("notation")
.equalTo(command.toString()).on("child_added").then(snapshot= > {
agent.add(`record number is ` + snapshot.key);
});
You need to always use promises when working with databases. Moreover, the first response that you see might be because of the failed function which timed out. If you see your console logs in firebase, you might see the errors. Also check your default response, if it has the text that User said $name or something similar, then that is what causes the issue in the first attempt.
If you still don't get it to work, try logging the returned data and post your logs here.
I am trying to pass a object { key:value} and send it to meteor publish so i can query to database.
My Mongo db database has (relevant datas only) for products:
products : {
categs:['Ladies Top','Gents'],
name : Apple
}
In meteor Publish i have the following:
Meteor.publish('product', (query) =>{
return Clothings.find(query);
})
In client i use the following to subscribe:
let query = {categs:'/ladies top/i'}; // please notice the case is lower
let subscribe = Meteor.subscribe('product',query);
if (subscribe.ready()){
clothings = Products.find(query).fetch().reverse();
let count = Products.find(query).fetch().reverse().length; // just for test
}
The issue is, when i send the query from client to server, it is automatically encoded eg:
{categs:'/ladies%top/i'}
This query doesnot seem to work at all. There are like total of more than 20,000 products and fetching all is not an option. So i am trying to fetch based on the category (roughly around 100 products each).
I am new to ,meteor and mongo db and was trying to follow existing code, however this doesnot seem to be correct. Is there a better way to improve the code and achieve the same ?
Any suggestion or idea is highly appreciated.
I did go through meteor docs but they dont seem to have examples for my scenario so i hope someone out there can help me :) Cheers !
Firstly, you are trying to send a regex as a parameter. That's why it's being encoded. Meteor doesn't know how to pass functions or regexes as parameters afaict.
For this specific publication, I recommend sending over the string you want to search for and building the regex on the server:
client:
let categorySearch = 'ladies top';
let obj = { categorySearch }; // and any other things you want to query on.
Meteor.subscribe('productCategory',obj);
server:
Meteor.publish('productCategory',function(obj){
check(obj,Object);
let query = {};
if (obj.categorySearch) query.category = { $regex: `/${obj.categorySearch}/i` };
// add any other search parameters to the query object here
return Products.find(query);
});
Secondly, sending an entire query objet to a publication (or Method) is not at all secure since an attacker can then send any query. Perhaps it doesn't matter with your Products collection.
In my server I update some documents using bulk API:
{"update":{"_type":"post","_retry_on_conflict":"3","_index":"xxxx","_id":"yyyy"}}
{"doc":{"sentiment":"positive","mood":1,"upgrade":true}}
After I get the response I make a new request for the same document using search:
{"query":{"filtered":{"filter":{"ids":{"values":["yyyy"]}}}}}
But the returned document has no updated value( Still has the old value ). If I wait for some time the updated value appears. I Think that occurs because bulk is async? Is there any way to fix this?
you can use refresh api to force index update, or even add ?refresh=true at the end of bulk command. But normally not recommended. Also, If there are more than one Node, you may need to use synced flush.